Question

To get a n-type semiconductor from silicon, it should be doped with a substance with valency ...................

(a) 2 (b) 1 (c) 3 (d) 5

Answer 1

Answer: (d) 5.

To get an n-type semiconductor from silicon, it should be doped with a substance with valence 5.

e.g., Si doped with As (5 valence electrons) lead to the formation of an n-type semiconductor as shown below